Legal claims defining the scope of protection. Each claim is shown in both the original legal language and a plain English translation.
1. A monolithic light-emitting diode (LED) panel, comprising: a first layer comprising an LED array having rows and columns of interconnected LED pixels, each LED pixel has a red LED, a green LED, and a blue LED, and each LED has a cathode and an anode; a second layer comprising a plurality of driver circuits, each driver circuit is connected to a power source and comprises an on-off switch; and a plurality of cathode buses and a plurality of anode buses disposed between the first layer and the second layer, wherein each of the plurality of driver circuits outputs a constant current to one of the plurality of cathode buses or to one of the plurality of anode buses, and wherein the cathode of each LED is connected to one of the plurality of cathode buses and the anode of each LED is connected to one of the plurality of anode buses.
This invention relates to display technology and addresses the need for efficient and integrated light-emitting diode (LED) panels. The described monolithic LED panel comprises a first layer containing an LED array. This array is organized into rows and columns of interconnected LED pixels. Each individual LED pixel is composed of three distinct LEDs: a red LED, a green LED, and a blue LED. Every LED within these pixels has a cathode and an anode terminal. A second layer of the panel houses a plurality of driver circuits. Each driver circuit is designed to connect to a power source and includes an on-off switch for controlling the flow of current. Positioned between the first and second layers are multiple cathode buses and multiple anode buses. These buses serve as conductive pathways. Each driver circuit is configured to output a constant current. This constant current is directed either to one of the cathode buses or to one of the anode buses. Crucially, the cathode of each LED in the array is connected to one of these cathode buses, and the anode of each LED is connected to one of these anode buses. This arrangement allows for precise control of individual LED pixels for display purposes.
2. The monolithic LED panel of claim 1 , wherein each anode bus connects anodes of LEDs of a same color in a column and each cathode bus connects cathodes of the red LEDs, the green LEDs, and the blue LEDs in a row, each anode bus receives a constant current outputted from the driver circuit, and each cathode bus is connected to the on-off switch in the driver circuit.
This invention relates to a monolithic LED panel with an improved electrical architecture for driving LEDs. The panel addresses the challenge of efficiently controlling multiple LEDs in a large display while minimizing power loss and complexity. The panel consists of LEDs arranged in a grid, where each LED is one of red, green, or blue. The panel includes anode buses and cathode buses. Each anode bus connects the anodes of LEDs of the same color in a column, ensuring that all LEDs of a given color in a column share a common anode connection. Each cathode bus connects the cathodes of red, green, and blue LEDs in a row, allowing row-wise control of the LEDs. The driver circuit provides a constant current to each anode bus, ensuring uniform brightness across LEDs of the same color in a column. The driver circuit also includes on-off switches connected to each cathode bus, enabling individual row control. This architecture simplifies the driver circuit by reducing the number of current sources needed and improves power efficiency by minimizing voltage drops across the panel. The design is particularly useful in large-scale LED displays where power consumption and driver complexity are critical factors.
3. The monolithic LED panel of claim 1 , wherein each anode bus connects anodes of the red LEDs, the green LEDs, and the blue LEDs in a row, each cathode bus connects cathodes of LEDs of a same color in a column, each cathode bus receives a constant current outputted from the driver circuit, and each anode bus is connected to the on-off switch in the driver circuit.
This invention relates to a monolithic LED panel designed for high-resolution display applications. The panel addresses the challenge of efficiently driving multiple colored LEDs (red, green, and blue) in a matrix configuration while minimizing power consumption and complexity. The panel consists of an array of LEDs arranged in rows and columns, where each row contains red, green, and blue LEDs. Each row is connected to an anode bus, which links the anodes of all LEDs in that row. Each column is connected to a cathode bus, which links the cathodes of LEDs of the same color. The driver circuit provides a constant current to each cathode bus, ensuring uniform brightness across LEDs of the same color. The anode buses are individually controlled by on-off switches in the driver circuit, allowing selective activation of entire rows. This design simplifies the driver circuitry by reducing the number of control lines while maintaining precise color control and brightness uniformity. The monolithic structure integrates all components into a single panel, enhancing reliability and manufacturing efficiency. The invention is particularly useful in high-density LED displays where power efficiency and compact design are critical.
4. The monolithic LED panel of claim 1 , wherein the red LED, the green LED, and the blue LED are quantum dot LEDs or organic LEDs.
The invention relates to a monolithic LED panel designed for high-resolution display applications, addressing the challenge of integrating multiple color LEDs into a compact, efficient structure. The panel includes a substrate with an array of red, green, and blue LEDs arranged in a repeating pattern to form pixels. Each LED is electrically connected to a common electrode and an individual electrode, allowing independent control of each LED. The LEDs are fabricated using quantum dot or organic LED technology, which enables precise color tuning, high brightness, and improved efficiency compared to traditional inorganic LEDs. Quantum dot LEDs offer narrow emission spectra and high color purity, while organic LEDs provide flexibility and uniform light emission. The monolithic design eliminates the need for separate color filters or complex packaging, reducing manufacturing costs and improving performance. This configuration is particularly useful in high-density display applications, such as micro-LEDs for augmented reality or high-resolution screens, where color accuracy and pixel density are critical. The use of quantum dot or organic LEDs further enhances the panel's ability to produce vibrant, accurate colors while maintaining energy efficiency.
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June 30, 2020
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